Information analysis device and information analysis program.

Abstract

This information analyzing device analyzes information relating to a subjective examination and comprises: a subjective value acquisition means for acquiring a subjective value of an eye under examination measured in the subjective examination; a data log acquisition means for acquiring a data log relating to the subjective examination when the subjective value of the eye under examination is measured in the subjective examination; an evaluation information acquisition means for acquiring evaluation information for evaluating the reliability of the subjective examination on the basis of the data log; and an output means for outputting the subjective value and the evaluation information. This information analyzing device makes it easy for an examiner to determine the suitability of a subjective examination carried out by an inexperienced operator, thereby facilitating determination of the necessity of a re-examination of an eye under examination, a suitable prescription for an eye under examination, and the like.

Description

[Technical field]

[0001] The present disclosure relates to an information analysis device and an information analysis program for analyzing information relating to a subjective test. [Background technology]

[0002] As an example of an apparatus for performing a subjective examination on a test eye, a subjective eye examination apparatus is known which places an optical element in front of the test eye and presents a visual target via the optical element to subjectively measure the optical characteristics of the test eye (see Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 5-176893 Summary of the Invention

[0004] In the subjective examination, an inexperienced operator may operate a subjective optometry device to perform a subjective examination on the subject's eye and obtain a measurement result. In this case, the subjective examination by the operator may not always proceed well, and if the examiner uses the measurement result by the operator as it is, there is a possibility that the prescription may be inappropriate for the subject's eye.

[0005] In view of the above-mentioned conventional techniques, the present disclosure has as its technical object to provide an information analysis device and an information analysis program that can easily determine the suitability of a subjective test using a subjective eye examination device.

[0006] An information analysis device according to a first aspect of the present disclosure, A visual target presenting means for emitting a visual target light beam toward the eye to be examined and a correction means for changing the optical characteristics of the visual target light beam are used to subjectively measure the optical characteristics of the eye to be examined. An information analysis device for analyzing information relating to a subjective test, The aboveThe subjective value acquisition means acquires a subjective value of the subject's eye, a data log acquisition means acquires a data log relating to the subjective test when the subjective value of the subject's eye is measured in the subjective test, an evaluation information acquisition means acquires evaluation information for evaluating the reliability of the subjective test based on the data log, and an output means outputs the subjective value and the evaluation information. The data log acquisition means acquires, as a data log related to the subjective test, at least one of an operation data log related to the operation of the optotype presenting means by an operator or a control means and an operation data log related to the operation of the correction means by an operator or a control means. .

[0007] An information analysis program according to a second aspect of the present disclosure, A visual target presenting means for emitting a visual target light beam toward the eye to be examined and a correction means for changing the optical characteristics of the visual target light beam are used to subjectively measure the optical characteristics of the eye to be examined. An information analysis program for use in an information analysis device that analyzes information relating to a subjective test, the information analysis program being executed by a processor of the information analysis device to perform the subjective test The measured of the subject's eye Self A subjective value acquisition step of acquiring a subjective value; When the subjective value of the subject's eye is measured in the subjective test A data log acquisition step of acquiring a data log related to the subjective test; and evaluation information used to confirm the reliability of the subjective test based on the data log. Get An acquisition step; an output step of outputting the subjective value and the evaluation information; causing the information analysis device to execute The data log acquisition step acquires, as a data log related to the subjective test, at least one of an operation data log related to the operation of the optotype presenting means by an operator or a control means and an operation data log related to the operation of the correction means by an operator or a control means. . [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a diagram showing an example of a flow of a subjective examination of a subject's eye. [Diagram 2] FIG. 1 is an external view of an optometric apparatus. [Diagram 3] FIG. 2 is a diagram showing a measurement unit of the optometry apparatus. [Figure 4] 1 is a schematic configuration diagram of the inside of an optometry apparatus as viewed from the front. [Diagram 5] 2 is a schematic configuration diagram of the inside of the optometry apparatus as viewed from the side. FIG. [Figure 6] 2 is a schematic configuration diagram of the inside of the optometry apparatus as viewed from above. FIG. [Figure 7] FIG. 2 is a diagram showing a control system of the optometric apparatus. [Figure 8] 13 is an example of a flowchart showing a control operation of the optometry apparatus. [Figure 9]13 is an example of a flowchart showing acquisition of an evaluation value for subjective measurement by an assistant. [Figure 10] 2 is an example of a display screen of a monitor. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] <Summary> An overview of an information analysis device according to an embodiment of the present disclosure will be described. The items classified in <> below can be used independently or in association with each other.

[0010] <Method of acquiring self-awareness value> The information analysis device in this embodiment includes a subjective value acquisition means (e.g., a control unit 70). The subjective value acquisition means acquires a subjective value of the test eye measured by a subjective test on the test eye. For example, the subjective value of the test eye may be a perfectly corrected value of the test eye. For example, the perfectly corrected value of the test eye may be a value of the most positive correction power at which the best visual acuity of the test eye is obtained. Furthermore, for example, the subjective value of the test eye may be a prescription value used when prescribing spectacles for the test eye. For example, the prescription value of the test eye may be a value of correction power at which a predetermined visual acuity of the test eye is obtained.

[0011] For example, the subjective value acquisition means may acquire the subjective value of the subject's eye by receiving a subjective value measured by a subjective optometry device (e.g., see JP 2017-86652 A) that projects a visual target light beam toward the subject's eye and changes the optical characteristics of the visual target light beam to subjectively measure the optical characteristics of the subject's eye. Note that, when the information analysis device includes a subjective measurement means described later, the subjective value acquisition means may acquire the subjective value of the subject's eye by measuring the subjective value using the subjective measurement means.

[0012] <Method of acquiring data log> The information analyzing device in this embodiment includes a data log acquiring means (e.g., a control unit 70). The data log acquiring means acquires a data log related to a subjective test when a subjective value of a subject's eye is measured in a subjective test of the subject's eye.

[0013] For example, the data log acquiring means may acquire a data log related to the subjective examination by receiving a data log when the subjective value is measured by the subjective optometry device. In addition, when the information analysis device includes a subjective measurement means described later, the data log acquiring means may acquire a data log when the subjective value is measured by using the subjective measurement means.

[0014] The data log related to the subjective test on the subject's eye may be managed in association with identification information (e.g., ID number, etc.) for identifying the subject. In this case, the data log acquiring means can acquire the data log related to the subjective test when the subjective value of the subject's eye is measured by extracting the data log to which the predetermined identification information is assigned.

[0015] In this embodiment, the data log related to the subjective test may be a log obtained by carrying out the subjective test.

[0016] For example, the data log related to the subjective test may be an operation data log related to the operation of the operator when the operator performs the subjective test.

[0017] For example, the operation data log of the operator may include an operation data log related to the operation of the optotype presenting means by the operator. As an example, the operation data log may be a data log indicating at least one of the number of times (frequency) that the operator switches the optotypes presented to the subject's eye, the types of optotypes that the operator presented to the subject's eye, etc. Note that the types of optotypes that the operator presented to the subject's eye may be the number of types of optotypes that the operator presented to the subject's eye, the order in which the operator presented optotypes corresponding to each visual acuity value to the subject's eye, etc.

[0018] Furthermore, for example, the operation data log of the operator may include an operation data log related to the operation of the correction optical system by the operator. As an example, it may be a data log indicating at least one of the number of times (frequency) that the operator switches the correction power used to correct the subject's eye, the correction power applied by the operator to the subject's eye, etc. Note that the correction power applied by the operator to the subject's eye may be the number of correction powers applied by the operator to the subject's eye during the subjective examination, the order of the correction powers applied by the operator to the subject's eye during the subjective examination, etc.

[0019] Furthermore, for example, the operation data log of the operator may include a data log showing the time required for the subjective test by the examiner. As an example, it may be a data log showing the time required from the start to the end of the operation in the subjective test by the operator (for example, the time required from the issuance of a signal for the operator to select an optotype to be presented to the subject's eye to the issuance of a signal for determining the subjective value of the subject's eye).

[0020] In addition, when a subjective test on the subjective eye is automatically performed, the data log acquisition means may acquire an operation data log by the control means that performed the subjective test as a data log related to the subjective test.

[0021] For example, in this case, an operation data log regarding the operation of the optotype presenting unit means by the control means may be included. As an example, a data log indicating at least one of the number of times (frequency) the optotype is switched by the control means, the type of optotype switched by the control means, etc. may be included. Also, for example, in this case, an operation data log regarding the operation of the correction optical system by the control means may be included. As an example, a data log indicating at least one of the number of times (frequency) the correction power is switched by the control means, the correction power added to the subject's eye by the control means, etc. may be included. Also, for example, in this case, a data log indicating the time required for the subjective test by the control means may be included. As an example, a data log indicating the time required from the start to the end of the subjective test by the control means (for example, the time required from the time the control means switches the optotype presented by the control means to the time the subjective value of the subject's eye is stored in the storage means) may be included.

[0022] Of course, the subjective test on the subject's eye may be partially performed by an operator (examiner or subject) and partially performed automatically. In this case, the data log acquisition means may acquire both an operation data log related to the operation when the operator performed the subjective test and an operation data log by the control means that performed the subjective test.

[0023] Furthermore, for example, the data log related to the subjective test may be a data log that represents the state of the subject's eye (changes during the test) that occur when the subject undergoes the subjective test. For example, the data log that represents the state of the subject's eye (changes during the test) may be a data log that represents at least one of the number of times (frequency) the subject's eye narrows, the number of times (frequency) the subject's eye blinks, changes in visual acuity values ​​corresponding to targets that the subject's eye can see, changes in pupil size of the subject's eye, whether the subject's eye has ptosis, and the time required for the subject to respond.

[0024] The data log acquisition means may be configured to acquire a data log including at least one of the above data logs as a data log related to the subjective test. That is, the data log acquisition means may acquire one data log in the above data logs as a data log related to the subjective test, or may acquire multiple data logs in the above data logs. Of course, the data log acquisition means may acquire a data log different from the above data logs as a data log related to the subjective test. For example, the data log acquisition means may acquire a data log indicating a subjective value obtained in the subjective test, an error log occurring in the subjective test, etc.

[0025] The data log acquiring means may also acquire a data log obtained in a test different from the subjective test. In this case, the data log acquiring means may acquire a data log indicating an objective value obtained in the objective test (for example, the objective refractive power of the subject's eye, aberration information of the subject's eye, etc.), the reliability of the objective test, etc. The data log acquiring means may also acquire a data log indicating the results of a medical interview conducted with the subject (for example, age, sex, occupation, purpose of making glasses, etc.), a data log indicating the power of the glasses worn by the subject (i.e., the previous glasses value), etc.

[0026] In this embodiment, the data log acquisition means may acquire a data log related to a spherical test for acquiring spherical information of the subject's eye as a data log related to a subjective test. For example, the data log related to the spherical test of the subject's eye may be a data log obtained by carrying out a spherical test. This makes it possible to obtain evaluation information, which will be described later, that reflects whether the spherical information of the subject's eye has been properly tested, and makes it easy to determine whether to retest or prescribe for the subject's eye.

[0027] For example, the data log relating to the spherical inspection may be an operation data log relating to the operation of the operator when the operator performs the spherical inspection.

[0028] For example, the operation data log regarding the spherical test may include an operation data log regarding the operation of the optotype presenting means in the spherical test by the operator. As an example, the operation data log may include a data log indicating at least one of the number of times the optotype was switched in the spherical test, the type of optotype presented in the spherical test, and the like.

[0029] Furthermore, for example, the operation data log related to the spherical test may include an operation data log related to the operation of the corrective optical system by the operator in the spherical test. As an example, the operation data log may include a data log indicating at least one of the number of times the spherical power was switched in the spherical test, the spherical power added to the subject's eye in the spherical test, and the like.

[0030] Furthermore, for example, the operation data log regarding the spherical inspection may include a data log indicating the time required for the operator to perform the spherical inspection. As one example, the operation data log may include a data log indicating the time required for the operator to perform the spherical inspection from start to finish.

[0031] Of course, for example, a data log related to a spherical test may include a data log representing the condition of the test eye caused by the subject undergoing a spherical test, a data log showing the test results obtained in the spherical test (e.g., the spherical power of the test eye, the equivalent spherical power of the test eye, etc.), an error log that occurred in the spherical test, etc.

[0032] The data log acquiring means may acquire at least a data log related to an accommodation test for acquiring accommodation information of the subject's eye as a data log related to the spherical test. For example, the data log related to the accommodation test of the subject's eye may be a data log obtained by performing an accommodation test. By using such a data log, it is possible to obtain evaluation information, which will be described later, that reflects the accommodation information of the subject's eye, and it becomes possible to easily perform an appropriate test or prescription for the subject's eye.

[0033] For example, the data log related to the adjustment test may be an operation data log related to the operation of the operator when the operator performs the adjustment test.

[0034] For example, the operation data log regarding the accommodation test may include an operation data log regarding the operation of the optotype presenting means in the accommodation test by the operator. As an example, the operation data log may include a data log indicating at least one of the number of times the optotype was switched in the accommodation test, the type of optotype presented in the accommodation test, and the like.

[0035] Furthermore, for example, the operation data log regarding the accommodation test may include an operation data log regarding the operation of the corrective optical system by the operator in the accommodation test. As an example, it may include a data log indicating at least one of the number of times the spherical power is switched in the accommodation test, the spherical power added to the subject's eye in the accommodation test, and the like.

[0036] Furthermore, for example, the operation data log regarding the adjustment test may include a data log indicating the time required for the adjustment test by the operator. As one example, the operation data log may include a data log indicating the time required for the adjustment test by the operator from the start to the end of the operation.

[0037] Of course, for example, a data log related to an accommodation test may include a data log representing the condition of the test eye resulting from the subject undergoing an accommodation test, a data log showing the test results obtained in the accommodation test, an error log that occurred in the accommodation test, etc.

[0038] The data log showing the test results obtained in the accommodation test may include information based on a plurality of optical characteristics of the test eye, information about the accommodation of the test eye, etc. As an example, the information based on a plurality of optical characteristics of the test eye may be information such as the difference or average value of each subjective value obtained at the start and end of the accommodation test, the difference or average value of the objective value obtained by the objective test and the subjective value obtained by the subjective test, etc. As an example, the information about the accommodation of the test eye may be information such as the presence or absence of accommodation, the amount of accommodation, etc.

[0039] In addition, in this embodiment, the data log acquisition means may acquire a data log related to an astigmatism test for acquiring astigmatism information of the subject's eye as a data log related to the subjective test. For example, the data log related to the astigmatism test of the subject's eye may be a data log obtained by performing an astigmatism test. This makes it possible to obtain evaluation information, which will be described later, that reflects whether the astigmatism information of the subject's eye has been properly tested, and makes it easy to determine whether to retest or prescribe for the subject's eye.

[0040] For example, the data log related to the astigmatism test may be an operation data log related to the operation of the operator when the operator performs the astigmatism test.

[0041] For example, the operation data log regarding the astigmatism test may include an operation data log regarding the operation of the optotype presenting means in the astigmatism test by the operator. As an example, the operation data log may include a data log indicating at least one of the number of times the optotype was switched in the astigmatism test, the type of optotype presented in the astigmatism test, and the like.

[0042] Furthermore, for example, the operation data log related to the astigmatism test may include an operation data log related to the operation of the corrective optical system in the astigmatism test by the operator. As an example, it may include a data log indicating at least one of the number of times the astigmatism power (cylinder power and astigmatism axis angle) was changed in the astigmatism test, the astigmatism power (cylinder power and astigmatism axis angle) added to the examinee's eye in the astigmatism test, and the like.

[0043] Furthermore, for example, the operation data log regarding the astigmatism test may include a data log indicating the time required for the operator to perform the astigmatism test. As one example, the operation data log may include a data log indicating the time required for the operator to perform the astigmatism test from start to finish.

[0044] Of course, for example, a data log related to an astigmatism test may include a data log representing the condition of the test eye resulting from the test subject undergoing the astigmatism test, a data log showing the test results obtained in the astigmatism test (e.g., the cylinder power of the test eye, the astigmatism axis angle of the test eye, etc.), a log of errors that occurred in the astigmatism test, etc.

[0045] For example, the data log acquisition means may acquire at least a data log related to a residual astigmatism test for acquiring residual astigmatism information of the subject's eye as a data log related to the astigmatism test. For example, the data log related to the residual astigmatism test of the subject's eye may be a data log obtained by performing a residual astigmatism test. By using such a data log, it is possible to obtain evaluation information, which will be described later, that reflects the residual astigmatism information of the subject's eye, and it becomes possible to easily perform an appropriate test or prescription for the subject's eye.

[0046] For example, the data log related to the residual astigmatism test may be an operation data log related to the operation of the operator when the operator performs the residual astigmatism test.

[0047] For example, the operation data log related to the residual astigmatism test may include an operation data log related to the operation of the optotype presenting means in the residual astigmatism test by the operator. As an example, the operation data log may include a data log indicating at least one of the number of times the optotype was switched in the residual astigmatism test, the type of optotype presented in the residual astigmatism test, and the like.

[0048] Furthermore, for example, the operation data log related to the residual astigmatism test may include an operation data log related to the operation of the corrective optical system in the residual astigmatism test by the operator. As an example, it may include a data log indicating at least one of the number of times the astigmatism power was changed in the residual astigmatism test (in other words, the number of times the residual astigmatism was corrected), the astigmatism power added to the examinee's eye in the residual astigmatism test, and the like.

[0049] Furthermore, for example, the operation data log regarding the adjustment test may include a data log indicating the time required for the adjustment test by the operator. As one example, the operation data log may include a data log indicating the time required for the adjustment test by the operator from the start to the end of the operation.

[0050] Of course, for example, the data log regarding the residual astigmatism test may include a data log representing the condition of the test eye resulting from the subject undergoing the residual astigmatism test, a data log showing the test results obtained in the residual astigmatism test, an error log that occurred in the residual astigmatism test, etc.

[0051] The data log showing the test results obtained in the residual astigmatism test may include information about the residual astigmatism of the test eye, etc. As an example, the information about the residual astigmatism of the test eye may be at least any one of information about the presence or absence of residual astigmatism, the degree of convergence of the residual astigmatism, etc. For example, the degree of convergence of the residual astigmatism may indicate whether the residual astigmatism of the test eye has gradually disappeared by correcting it.

[0052] In this embodiment, the data log acquisition means may be configured to acquire at least one of a data log related to a spherical test and a data log related to an astigmatism test as a data log related to a subjective test.

[0053] <Method of acquiring evaluation information> The information analysis device in this embodiment includes an evaluation information acquisition means (e.g., a control unit 70). The evaluation information acquisition means acquires evaluation information for evaluating the reliability of the subjective test based on the data log acquired by the data log acquisition means. For example, the reliability of the subjective test may indicate whether the subjective test was appropriately performed by the operator. As an example, it may indicate whether the operator performed the subjective test in the correct procedure, whether the items in the subjective test performed by the operator were sufficient, etc.

[0054] The evaluation information acquisition means acquires, as the evaluation information, information that allows the operator to evaluate the reliability of the subjective test. For example, at least one of an evaluation symbol, an evaluation value, an evaluation color, an evaluation graph, etc., that allows the operator to evaluate the reliability of the subjective test may be acquired. Of course, the evaluation information acquisition means may be configured to acquire a plurality of pieces of information from among such evaluation symbols, evaluation values, evaluation colors, evaluation graphs, etc.

[0055] For example, the evaluation information acquisition means may acquire a symbol representing the appropriateness of the subjective test as an evaluation symbol representing the evaluation information based on the data log. As an example, a symbol representing that the subjective test is appropriate, a symbol representing that the subjective test is inappropriate, etc. may be acquired.

[0056] Also, for example, the evaluation information acquiring means may acquire, based on the data log, an evaluation value classified based on the data log related to the subjective test as an evaluation value representing the evaluation information. As an example, the evaluation value may be indicated by symbols such as evaluation value A, evaluation value B, ..., evaluation value n, etc., classified based on the data log related to the subjective test. As an example, the evaluation value may be indicated by numerical values ​​(in other words, numerical values ​​in n stages), such as evaluation value 1, evaluation value 2, ..., evaluation value n, etc., classified based on the data log related to the subjective test. Note that any number of classifications based on the data log (here, the number of symbols and the number of stages) may be provided.

[0057] Also, for example, the evaluation information acquiring means may acquire an evaluation color representing the evaluation information based on the data log. As an example, the evaluation information may be color-coded depending on whether or not a specific data log is included in the data log related to the subjective test. For example, a correspondence may be set in advance between the evaluation of the reliability of the subjective test and the color coding of the evaluation information.

[0058] Also, for example, the evaluation information acquiring means may acquire an evaluation graph representing the evaluation information based on the data log. For example, an evaluation graph may be displayed in which the reliability (or lowness) of the subjective test is associated with each item included in the data log related to the subjective test.

[0059] For example, the evaluation information acquisition means may acquire evaluation information for evaluating the reliability of the subjective test by using a table in which a data log related to the subjective test of the subject's eye is associated with the evaluation information. For example, the table may be set in advance from an experiment, a simulation, or the like. In addition, in this embodiment, the evaluation information acquisition means may acquire evaluation information for evaluating the reliability of the subjective test by using an arithmetic expression in which a data log related to the subjective test of the subject's eye is associated with the evaluation information. For example, the arithmetic expression may be set in advance from an experiment, a simulation, or the like. For example, when a specific data log is included in the data log related to the subjective test, the evaluation information acquisition means may obtain evaluation information by changing the values ​​of the table, the coefficients of the arithmetic expression, or the like, based on the parameters of the specific data log.

[0060] The evaluation information acquisition means may be configured to acquire the evaluation information as information for evaluating the overall reliability of the subjective test by the operator. The evaluation information acquisition means may be configured to acquire the evaluation information as information for evaluating at least a portion of the reliability of the subjective test by the operator. For example, in this case, reliability information may be acquired for each item of the subjective test by the operator. Of course, the evaluation information acquisition means may be configured to acquire the evaluation information as information for evaluating the overall reliability of the subjective test by the operator and the reliability of each item of the subjective test by the operator.

[0061] In this embodiment, the evaluation information acquisition means may acquire evaluation information based on a data log related to the spherical test as a data log related to the subjective test. That is, the evaluation information acquisition means may acquire evaluation information based on a data log representing at least one of the number of times the optotype was switched in the spherical test, the type of optotype presented in the spherical test, the number of times the spherical power was switched in the spherical test, the spherical power added to the subject's eye in the spherical test, etc. For example, when the evaluation information acquisition means uses a data log related to the accommodation test as a data log related to the spherical test, the evaluation information may be acquired based on a data log representing at least one of the number of times the optotype was switched in the accommodation test, the type of optotype presented in the accommodation test, the number of times the spherical power was switched in the accommodation test, the spherical power added to the subject's eye in the accommodation test, etc.

[0062] In addition, in this embodiment, the evaluation information acquisition means may acquire evaluation information based on a data log related to the astigmatism test as a data log related to the subjective test. That is, the evaluation information may be acquired based on a data log representing at least one of the number of times the optotype was switched in the astigmatism test, the type of optotype presented in the astigmatism test, the number of times the astigmatism power was switched in the astigmatism test, the astigmatism power added to the examinee's eye in the astigmatism test, etc. For example, when the evaluation information acquisition means uses a data log related to the residual astigmatism test as a data log related to the astigmatism test, the evaluation information may be acquired based on a data log representing at least one of the number of times the optotype was switched in the residual astigmatism test, the type of optotype presented in the residual astigmatism test, the number of times the astigmatism power was switched in the residual astigmatism test, the astigmatism power added to the examinee's eye in the residual astigmatism test, etc.

[0063] In the present embodiment, the evaluation information acquiring means may be configured to acquire evaluation information based on at least one of the data log relating to the spherical test and the data log relating to the astigmatism test.

[0064] Of course, in this embodiment, the evaluation information acquisition means may acquire evaluation information based on data logs related to the subjective examination, such as a data log representing the condition of the test eye caused by the subject undergoing the subjective examination, a data log indicating the subjective values ​​obtained in the subjective examination, an error log occurring in the subjective examination, etc.

[0065] <Output method> The information analysis device in this embodiment includes an output means (e.g., a control unit 70). The output means outputs a subjective value of the subject's eye measured in the subjective test, and evaluation information for evaluating the reliability of the subjective test. That is, the output means outputs the subjective value acquired by the subjective value acquisition means and the evaluation information acquired by the evaluation information acquisition means.

[0066] The output means may output the evaluation information itself as the evaluation information. For example, the output means may output a symbol, an evaluation value, or the like, indicating the suitability of the subjective test, as the evaluation information. The output means may also output a graph or the like based on the evaluation value as the evaluation information. For example, the output means may output a graph or the like color-coded based on the evaluation value.

[0067] For example, the output means may output the subjective value and the evaluation information by at least one of the following: output by displaying on a display means (e.g., monitor 6a), output by generating a voice guide, output by transmitting to a memory or a server, output by printing on a printer, output by transmitting to an external device, etc. Note that, for example, the output means may output an identifier that associates the subjective value and the evaluation information. For example, in this case, the identifier may be a character string, a one-dimensional code (a barcode, etc.), a two-dimensional code (QR Code (registered trademark), a color code, etc.).

[0068] In this embodiment, the information analyzing device may be configured to receive and acquire the subjective values ​​of the subject's eye in a subjective test performed on the subject's eye using a device different from the information analyzing device, and a data log related to the subjective test. Also, in this embodiment, the information analyzing device may be configured to acquire the subjective values ​​of the subject's eye in a subjective test performed on the subject's eye using the information analyzing device, and a data log related to the subjective test. In this case, the information analyzing device can acquire the subjective values ​​and the data log by including the following subjective measuring means.

[0069] <Subjective measurement method> The information analysis device may include a subjective measuring means (e.g., a subjective measuring optical system 25). The subjective measuring means projects a visual target light beam toward the subject's eye and changes the optical characteristics of the visual target light beam to subjectively measure the optical characteristics of the subject's eye. As the subjective optical characteristics of the subject's eye, at least one of ocular refractive power (spherical power, cylindrical power, astigmatism axis angle, etc.), contrast sensitivity, binocular vision function (e.g., amount of strabismus, stereoscopic vision function, etc.), etc. may be measured.

[0070] The subjective measuring means may include a light projection optical system (e.g., light projection optical system 30). The light projection optical system projects a visual target light beam toward the subject's eye. The light projection optical system projects a visual target light beam emitted from a visual target presenting means toward the subject's eye. The light projection optical system may also project a visual target light beam that is emitted from the visual target presenting means and corrected via a correction optical system toward the subject's eye. For example, a display means (e.g., display 31) may be used as the visual target presenting means.

[0071] The subjective measuring optical system may also include a correction optical system (e.g., the correction optical system 60). The correction optical system is disposed in the optical path of the light projection optical system, and changes the optical characteristics of the visual target light beam. The correction optical system may be configured to change the optical characteristics of the visual target light beam. For example, the correction optical system may be capable of changing at least one of the spherical power, cylindrical power, and astigmatism axis angle of the visual target light beam by controlling an optical element. For example, the correction optical system may correct the spherical power of the subject's eye by optically changing the presentation position (presentation distance) of the visual target with respect to the subject's eye. In this case, the visual target presenting means may be configured to move in the optical axis direction, or an optical element (e.g., a spherical lens, etc.) disposed in the optical path may be configured to move in the optical axis direction. For example, the correction optical system may be an eye refractive power measuring unit (phoropter) that arranges an optical element in front of the subject's eye. Also, for example, the correction optical system may be configured to change the optical characteristics of the visual target light beam by controlling an optical element disposed between the visual target presenting means and an optical member for guiding the visual target light beam from the light projecting optical system to the subject's eye. That is, the correction optical system may be configured as a phantom lens refractometer (phantom correction optical system).

[0072] In addition, in this embodiment, the information analyzing device may be configured to receive and acquire the objective value of the subject's eye in an objective test performed on the subject's eye using a device different from the information analyzing device, and a data log related to other sensory tests. In addition, in this embodiment, the information analyzing device may be configured to acquire the objective value of the subject's eye in an objective test performed on the subject's eye using the information analyzing device, and a data log related to other sensory tests. In this case, the information analyzing device can acquire the objective value and the data log by including the following objective measuring means.

[0073] <Objective measurement means> The information analyzing device may include an objective measuring means (for example, an objective measuring optical system 10). The objective measuring means projects a measuring light beam onto the fundus of the subject's eye and receives a fundus reflected light beam of the measuring light beam reflected by the fundus of the subject's eye, thereby objectively measuring the optical characteristics of the subject's eye. As the objective optical characteristics of the subject's eye, at least one of ocular refractive power (spherical power, cylindrical power, astigmatism axis angle, etc.), axial length, corneal shape, etc. may be measured.

[0074] The objective measuring means may include a light projecting optical system (e.g., a projection optical system 10a). The light projecting optical system projects a measurement light beam onto the fundus of the subject's eye. The objective measuring means may also include a light receiving optical system (e.g., a light receiving optical system 10b). The light receiving optical system receives a fundus reflection light beam, which is the measurement light beam reflected by the fundus of the subject's eye, with a detector (e.g., an image sensor 22).

[0075] The information analyzing device in this embodiment may be configured to include at least a subjective measuring means. That is, the information analyzing device may be configured to include a subjective measuring means, or may be configured to include both a subjective measuring means and an objective measuring means.

[0076] The present disclosure is not limited to the devices described in the present embodiment. For example, terminal control software (programs) that perform the functions of the following embodiments may be supplied to a system or device via a network or various storage media, and a control device (e.g., a CPU) of the system or device may read and execute the program.

[0077] <Example> An example of the information analysis device according to the present embodiment will be described.

[0078] First, a subjective test on the subject's eye using an information analysis device will be described. FIG. 1 is a diagram showing an example of a flow of a subjective test on the subject's eye E. For example, in a subjective test (subjective measurement), an assistant A assists an examiner D to perform an eye test (measurement) on the subject's eye E using a first subjective eye examination device 1. The assistant A may not be familiar with eye examinations. For example, the assistant A presents a test target to the subject's eye E and acquires a subjective value of the subject's eye E by switching the correction power for correcting the subject's eye E. A control unit of the first subjective eye examination device 1 transmits the subjective value of the subject's eye E and a data log related to the subjective test on the subject's eye E (data log when the subject's eye E is examined) to the information analysis device 100.

[0079] The control unit of the information analyzing device 100 receives and acquires the subjective values ​​of the subject's eye E and the data log related to the subjective test of the subject's eye E. The control unit of the information analyzing device 100 also analyzes the data log related to the subjective test of the subject's eye E and acquires evaluation information for evaluating the reliability of the subjective test by assistant A. For example, an evaluation value (described in detail later) for the subjective test by assistant A may be acquired based on whether or not a specific data log is included. The control unit of the information analyzing device 100 transmits the subjective values ​​of the subject's eye E and the evaluation information for the subjective test by assistant A to the second subjective optometry device 200.

[0080] The control unit of the second subjective optometry device 200 receives and acquires the subjective values ​​of the subject's eye E and the evaluation information on the subjective examination by the assistant A. The control unit of the second subjective optometry device 200 also displays the subjective values ​​of the subject's eye E and the evaluation information on the subjective examination by the assistant A on a monitor.

[0081] For example, in the subjective examination, the examiner D, who is accustomed to eye examinations, operates the second subjective optometry device 200 to examine the subject's eye E. It is difficult for the examiner D to judge the suitability of the subjective examination by the assistant A only by checking the subjective value of the subject's eye E, but by checking the evaluation information together with the subjective value of the subject's eye E, it becomes easier to judge the suitability of the subjective examination by the assistant A. Therefore, the examiner D can easily judge whether to perform a re-examination of the subject's eye E using the second subjective optometry device 200, what prescription to give to the subject's eye E, and so on, and then perform the eye examination of the subject's eye E.

[0082] In FIG. 1, the first subjective optometry device 1 and the information analysis device 100 are different devices, but the present invention is not limited thereto. In other words, the information analysis device 100 includes at least a receiving unit for receiving a subjective value of the subject's eye E and a data log related to the subjective test, a control unit for acquiring evaluation information on the subjective test by the assistant A, and a transmitting unit for outputting the subjective value of the subject's eye E and evaluation information on the subjective test by the assistant A, but the present invention is not limited thereto. For example, the first subjective optometry device 1 and the information analysis device 100 may be used together. In this case, the subjective value of the subject's eye E may be acquired using the first subjective optometry device 1, and the control unit of the first subjective optometry device 1 may acquire evaluation information on the subjective test by the assistant A based on the data log when the subjective value of the subject's eye E is acquired. For example, the control unit of the first subjective optometry device 1 may display the subjective value and evaluation information on a monitor of the first subjective optometry device 1, or may transmit the subjective value and evaluation information to the second subjective optometry device 200.

[0083] In this embodiment, the details will be described by taking as an example a configuration in which a first subjective optometry device 1 (hereinafter, optometry device 1) also functions as an information analysis device 100. Fig. 2 is an external view of the optometry device 1. For example, the optometry device 1 includes a housing 2, a presentation window 3, a forehead rest 4, a chin rest 5, a controller 6, an imaging unit 90, and the like.

[0084] The housing 2 has therein a measuring unit 7, a deflecting mirror 81, a reflecting mirror 84, a concave mirror 85, etc., which will be described later. The presentation window 3 is used to present a visual target to the subject's eye E. The forehead rest 4 is used to keep the distance between the subject's eye E and the optometry device 1 constant. The chin rest 5 is used to keep the distance between the subject's eye E and the optometry device 1 constant.

[0085] The controller 6 includes a monitor 6a, a switch section 6b, and the like. The monitor 6a displays various information (e.g., the measurement results of the subject's eye E, and the like). The monitor 6a is a touch panel, and also functions as the switch section 6b. The switch section 6b is used to perform various settings (e.g., input of a start signal, and the like). A signal corresponding to an operation instruction from the controller 6 is output to the control section 70 by wired communication via a cable (not shown). Note that a signal corresponding to an operation instruction from the controller 6 may be output to the control section 70 by wireless communication via infrared rays or the like.

[0086] The imaging unit 90 includes an imaging optical system (not shown). For example, the imaging optical system is used to capture an image of the subject's face. For example, the imaging optical system may be composed of an imaging element and a lens.

[0087] <Measurement part> The measurement unit 7 includes a left eye measurement unit 7L and a right eye measurement unit 7R. In this embodiment, the left eye measurement unit 7L and the right eye measurement unit 7R are configured with the same material. Of course, the left eye measurement unit 7L and the right eye measurement unit 7R may be configured with at least a part of different materials. The measurement unit 7 has a pair of subjective measurement units (described later) on the left and right, and a pair of objective measurement units (described later). The target light beam and the measurement light beam from the measurement unit 7 are guided to the test eye E through the presentation window 3.

[0088] Fig. 3 is a diagram showing the measurement unit 7. In Fig. 3, the measurement unit 7 for the left eye 7L is taken as an example of the measurement unit 7. The measurement unit 7R for the right eye is omitted because it has the same configuration as the measurement unit 7L for the left eye. For example, the measurement unit 7L for the left eye includes an objective measurement optical system 10, a subjective measurement optical system 25, a first target projection optical system 45, a second target projection optical system 46, an observation optical system 50, and the like.

[0089] <Objective measurement optical system> The objective measuring optical system 10 is used as a part of an objective measuring unit that objectively measures the optical characteristics of the subject's eye. In this embodiment, an objective measuring unit that measures the ocular refractive power of the subject's eye E will be described as an example of the optical characteristics of the subject's eye E. The optical characteristics of the subject's eye E may be axial length, corneal shape, etc., in addition to the ocular refractive power. For example, the objective measuring optical system 10 is composed of a projection optical system 10a and a light receiving optical system 10b.

[0090] The projection optical system 10a projects a spot-shaped measurement target onto the fundus of the subject's eye E through the center of the pupil of the subject's eye E. For example, the projection optical system 10a includes a light source 11, a relay lens 12, a hole mirror 13, a prism 15, an objective lens 93, a dichroic mirror 35, a dichroic mirror 29, and the like.

[0091] The light-receiving optical system 10b extracts the fundus reflected light beam reflected by the fundus of the subject's eye E in a ring shape through the pupil periphery of the subject's eye E. For example, the light-receiving optical system 10b includes a dichroic mirror 29, a dichroic mirror 35, an objective lens 93, a prism 15, a hole mirror 13, a relay lens 16, a mirror 17, a light-receiving aperture 18, a collimator lens 19, a ring lens 20, an image sensor 22, and the like.

[0092] In this embodiment, the description of the projection optical system 10a and the light receiving optical system 10b will be omitted. For details of these, please refer to, for example, JP 2018-47049 A.

[0093] <Subjective Measuring Optical System> The subjective measurement optical system 25 is used as part of a subjective measurement unit that subjectively measures the optical characteristics of the subject's eye E. In this embodiment, a subjective measurement unit that measures the ocular refractive power of the subject's eye E is taken as an example of the optical characteristics of the subject's eye E. The optical characteristics of the subject's eye E may be contrast sensitivity, binocular vision function (e.g., amount of heterophoria, stereoscopic vision function, etc.), etc., in addition to ocular refractive power. For example, the subjective measurement optical system 25 is composed of a light projection optical system 30 and a correction optical system 60.

[0094] <Light projection optical system> The light projection optical system 30 projects a visual target light beam toward the subject's eye E. For example, the light projection optical system 30 includes a display 31, a light projection lens 33, a light projection lens 34, a reflecting mirror 36, an objective lens 92, a dichroic mirror 35, a dichroic mirror 29, and the like.

[0095] A visual target (fixation target, test visual target, etc.) is displayed on the display 31. The visual target light beam emitted from the display 31 is projected onto the subject's eye E through the optical members from the light projecting lens 33 to the dichroic mirror 29 in order. The dichroic mirror 35 makes the optical path of the objective measurement optical system 10 and the optical path of the subjective measurement optical system 25 a common optical path. In other words, the dichroic mirror 35 makes the optical axis L1 of the objective measurement optical system 10 and the optical axis L2 of the subjective measurement optical system 25 coaxial. The dichroic mirror 29 is an optical path branching member. The dichroic mirror 29 reflects the visual target light beam by the light projecting optical system 30 and the measurement light beam by the projection optical system 10a described later, and guides them to the subject's eye E.

[0096] <Correction optical system> The correction optical system 60 is disposed in the optical path of the light projection optical system 30. The correction optical system 60 changes the optical characteristics of the visual target light beam emitted from the display 31. For example, the correction optical system 60 includes an astigmatism correction optical system 63, a drive mechanism 39 described later, and the like.

[0097] The astigmatism correcting optical system 63 is used to correct the cylindrical power and astigmatism axis angle of the subject's eye E. The astigmatism correcting optical system 63 is disposed between the projector lens 33 and the projector lens 34. The astigmatism correcting optical system 63 is composed of two positive cylindrical lenses 61a and 61b having the same focal length. The cylindrical lenses 61a and 61b are each independently rotated about the optical axis L2 by the driving of the rotation mechanisms 62a and 62b.

[0098] In this embodiment, the cylindrical lens 61a and the cylindrical lens 61b are used as the astigmatism correcting optical system 63, but the present invention is not limited to this. The astigmatism correcting optical system 63 may be configured to correct the cylindrical power, the astigmatism axis angle, etc. As an example, a corrective lens may be inserted into or removed from the optical path of the projection optical system 30.

[0099] <Drive unit> In this embodiment, the light source 11 and relay lens 12 included in the projection optical system 10a, the light receiving diaphragm 18, collimator lens 19, ring lens 20, and image sensor 22 included in the light receiving optical system 10b, and the display 31 included in the light projection optical system 30 can be moved integrally in the optical axis direction by a drive mechanism 39. In other words, the display 31, the light source 11, the relay lens 12, the light receiving diaphragm 18, the collimator lens 19, the ring lens 20, and the image sensor 22 are synchronized as a drive unit 95, and are moved integrally by the drive mechanism 39. The drive mechanism 39 is composed of a motor and a slide mechanism. The position to which the drive mechanism 39 is moved is detected by a potentiometer (not shown).

[0100] The driving mechanism 39 moves the display 31 in the direction of the optical axis L2 by moving the driving unit 95 in the direction of the optical axis. This allows the subject's eye E to be fogged in the objective measurement. In the subjective measurement, the presentation distance of the optotype to the subject's eye E can be optically changed to correct the spherical power of the subject's eye E. That is, the configuration for moving the display 31 in the direction of the optical axis L2 is used as a spherical correction optical system for correcting the spherical power of the subject's eye E, and the spherical power of the subject's eye E is corrected by changing the position of the display 31. The configuration of the spherical correction optical system may be different from that of this embodiment. For example, the spherical power may be corrected by arranging a number of optical elements in the optical path. Also, for example, the spherical power may be corrected by arranging a lens in the optical path and moving the lens in the direction of the optical axis.

[0101] Further, the driving mechanism 39 moves the driving unit 95 in the optical axis direction, thereby moving the light source 11, the relay lens 12, and the image sensor 22 from the light receiving aperture 18 in the optical axis L1 direction. As a result, the light source 11, the light receiving aperture 18, and the image sensor 22 are arranged so as to be optically conjugate with the fundus of the subject's eye E. Regardless of the movement of the driving unit 95, the hole mirror 13 and the ring lens 20 are arranged so as to be conjugate with the pupil of the subject's eye E at a constant magnification. Therefore, the fundus reflected light beam, which is the measurement light beam of the projection optical system 10a, is always incident on the ring lens 20 of the light receiving optical system 10b as a parallel light beam, and a ring-shaped light beam of the same size as the ring lens 20 is imaged by the image sensor 22 in a focused state, regardless of the ocular refractive power of the subject's eye E.

[0102] <First target projection optical system and second target projection optical system> The first target projection optical system 45 and the second target projection optical system 46 are disposed between the dichroic mirror 29 and a deflection mirror 81 described later. The first target projection optical system 45 emits near-infrared light for projecting an alignment target at infinity onto the cornea of ​​the subject's eye E. The second target projection optical system 46 is disposed at a position different from the first target projection optical system 45, and emits near-infrared light for projecting an alignment target at finite distance onto the cornea of ​​the subject's eye. The near-infrared light (alignment light) emitted from the second target projection optical system 46 is also used as anterior eye imaging light for imaging the anterior eye of the subject's eye by the observation optical system 50.

[0103] <Observation optical system> The observation optical system (imaging optical system) 50 includes a dichroic mirror 29, an objective lens 103, an imaging lens 51, an imaging element 52, etc. The dichroic mirror 29 transmits the anterior eye observation light and the alignment light. The imaging element 52 has an imaging surface arranged at a position conjugate with the anterior eye of the subject's eye E. The output from the imaging element 52 is input to the control unit 70. As a result, an anterior eye image of the subject's eye E is captured by the imaging element 52 and displayed on the monitor 6a. The observation optical system 50 also serves as an optical system for detecting an alignment index image formed on the cornea of ​​the subject's eye E by the first index projecting optical system 45 and the second index projecting optical system 46, and the position of the alignment index image is detected by the control unit 70.

[0104] <Internal configuration of information analysis device> The internal configuration of the optometry device 1 will be described. Fig. 4 is a schematic diagram of the inside of the optometry device 1 as viewed from the front. Fig. 5 is a schematic diagram of the inside of the optometry device 1 as viewed from the side. Fig. 6 is a schematic diagram of the inside of the optometry device 1 as viewed from above. For ease of explanation, Figs. 5 and 6 only show the optical axis of the left eye measurement unit 7L.

[0105] The optometry device 1 includes a subjective measurement unit. For example, the subjective measurement unit includes a measurement unit 7, a deflection mirror 81, a driving mechanism 82, a driving unit 83, a reflection mirror 84, a concave mirror 85, and the like. The subjective measurement unit is not limited to this configuration. For example, the configuration may not include the reflection mirror 84. In this case, the visual target light beam from the measurement unit 7 may be irradiated from an oblique direction with respect to the optical axis L of the concave mirror 85 after passing through the deflection mirror 81. In addition, for example, the configuration may include a half mirror. In this case, the visual target light beam from the measurement unit 7 may be irradiated from an oblique direction with respect to the optical axis L of the concave mirror 85 through the half mirror, and the reflected light beam may be guided to the subject's eye E.

[0106] The optometry device 1 has a left eye drive unit 9L and a right eye drive unit 9R, and can move the left eye measurement unit 7L and the right eye measurement unit 7R in the X direction. For example, by moving the left eye measurement unit 7L and the right eye measurement unit 7R, the distance between the measurement unit 7 and a deflection mirror 81 described later changes, and the presentation position in the Z direction of the visual target light beam from the measurement unit 7 is changed. As a result, the visual target light beam corrected by the correction optical system 60 is guided to the subject's eye E, and the measurement unit 7 is adjusted in the Z direction so that an image of the visual target light beam corrected by the correction optical system 60 is formed on the fundus of the subject's eye E.

[0107] For example, the deflection mirror 81 has a right-eye deflection mirror 81R and a left-eye deflection mirror 81L that are provided in a pair on the left and right sides. For example, the deflection mirror 81 is disposed between the correction optical system 60 and the subject's eye E. That is, the correction optical system 60 in this embodiment has a left-eye corrective optical system and a right-eye corrective optical system that are provided in a pair on the left and right sides, the left-eye deflection mirror 81L is disposed between the left-eye corrective optical system and the left eye EL, and the right-eye deflection mirror 81R is disposed between the right-eye corrective optical system and the right eye ER. For example, the deflection mirror 81 is preferably disposed at a pupil conjugate position.

[0108] For example, the left-eye deflection mirror 81L reflects the light beam projected from the left-eye measurement unit 7L and guides it to the left eye EL. Also, for example, the left-eye deflection mirror 81L reflects the fundus reflection light beam from the left eye EL and guides it to the left-eye measurement unit 7L. For example, the right-eye deflection mirror 81R reflects the light beam projected from the right-eye measurement unit 7R and guides it to the right eye ER. Also, for example, the right-eye deflection mirror 81R reflects the fundus reflection light beam from the right eye ER and guides it to the right-eye measurement unit 7R. Note that in this embodiment, a configuration using the deflection mirror 81 as a deflection member that reflects and guides the light beam projected from the measurement unit 7 to the subject's eye E is described as an example, but is not limited to this. The deflection member may be, for example, a prism, a lens, etc., as long as it can reflect and guide the light beam projected from the measurement unit 7 to the subject's eye E.

[0109] For example, the drive mechanism 82 is composed of a motor (drive unit) and the like. For example, the drive mechanism 82 has a drive mechanism 82L for driving the left-eye deflection mirror 81L and a drive mechanism 82R for driving the right-eye deflection mirror 81R. For example, the deflection mirror 81 rotates when driven by the drive mechanism 82. For example, the drive mechanism 82 rotates the deflection mirror 81 about a horizontal rotation axis (X direction) and a vertical rotation axis (Y direction). That is, the drive mechanism 82 rotates the deflection mirror 81 in the XY directions. Note that the rotation of the deflection mirror 81 may be either the horizontal direction or the vertical direction.

[0110] For example, the drive unit 83 is composed of a motor or the like. For example, the drive unit 83 has a drive unit 83L for driving the left-eye deflection mirror 81L and a drive unit 83R for driving the right-eye deflection mirror 81R. For example, the deflection mirror 81 moves in the X direction by being driven by the drive unit 83. For example, the left-eye deflection mirror 81L and the right-eye deflection mirror 81R are moved, so that the distance between the left-eye deflection mirror 81L and the right-eye deflection mirror 81R is changed, and the distance in the X direction between the left-eye optical path and the right-eye optical path can be changed according to the interpupillary distance of the test eye E.

[0111] For example, a plurality of deflection mirrors 81 may be provided in each of the optical path for the left eye and the optical path for the right eye. For example, two deflection mirrors may be provided in each of the optical path for the left eye and the optical path for the right eye (for example, two deflection mirrors may be provided in the optical path for the left eye). In this case, one deflection mirror may be rotated in the X direction, and the other deflection mirror may be rotated in the Y direction. For example, the deflection mirror 81 is rotated to deflect an apparent light beam for forming an image of the visual target light beam in front of the subject's eye, and the formation position of the image of the visual target light beam can be optically corrected.

[0112] For example, the concave mirror 85 is shared by the left eye measurement unit 7L and the right eye measurement unit 7R. For example, the concave mirror 85 is shared by the left eye optical path including the left eye correction optical system and the right eye optical path including the right eye correction optical system. That is, the concave mirror 85 is disposed at a position where it passes through both the left eye optical path including the left eye correction optical system and the right eye optical path including the right eye correction optical system. Of course, the concave mirror 85 does not have to be configured to be shared by the left eye optical path and the right eye optical path. That is, a concave mirror may be provided in each of the left eye optical path including the left eye correction optical system and the right eye optical path including the right eye correction optical system. For example, the concave mirror 85 guides the visual target light beam that has passed through the correction optical system 60 to the subject's eye E, and forms an image of the visual target light beam that has passed through the correction optical system 60 in front of the subject's eye E.

[0113] <Optical path of subjective measurement unit> The optical path of the subjective measurement unit will be described by taking the optical path for the left eye as an example. The optical path for the right eye has the same configuration as the optical path for the left eye. For example, in the subjective measurement unit for the left eye, the visual target light beam emitted from the display 31 in the subjective measurement optical system 25 enters the astigmatism correction optical system 63 through the projection lens 33, and when it passes through the astigmatism correction optical system 63, it is guided from the left eye measurement unit 7L to the left eye deflection mirror 81L via the projection lens 34, the reflection mirror 36, the objective lens 92, the dichroic mirror 35, and the dichroic mirror 29. The visual target light beam reflected by the left eye deflection mirror 81L is reflected by the reflection mirror 84 toward the concave mirror 85. The visual target light beam emitted from the display 31 reaches the left eye EL via each optical member in this way.

[0114] As a result, an image of the visual target light beam corrected by the correction optical system 60 is formed on the fundus of the left eye EL based on the eyeglass wearing position of the left eye EL (for example, about 12 mm from the corneal apex position). Therefore, adjustment of the spherical power by the spherical power correction optical system (in this embodiment, driving of the drive mechanism 39) is performed in front of the eye, which is equivalent to placing the astigmatism correction optical system 63 in front of the eye. The subject can collimate the image of the visual target light beam optically formed in front of the eye at a predetermined test distance optically via the concave mirror 85 in a natural state.

[0115] <Control Unit> 7 is a diagram showing a control system of the optometry apparatus 1. For example, the control unit 70 is electrically connected to various components such as the monitor 6a, non-volatile memory 75 (hereinafter, memory 75), light source 11, image sensor 22, display 31, image sensor 52, etc., which are provided in the measurement unit 7. In addition, for example, the control unit 70 is electrically connected to drive units (not shown) provided in each of the drive unit 9, drive mechanism 39, drive unit 83, etc.

[0116] For example, the control unit 70 includes a CPU (processor), a RAM, a ROM, etc. For example, the CPU controls each component in the eye examination apparatus 1. For example, the RAM temporarily stores various information. For example, the ROM stores various programs for controlling the operation of the eye examination apparatus 1, optotypes, initial values, etc. Note that the control unit 70 may be configured with multiple control units (i.e., multiple processors).

[0117] For example, the memory 75 is a non-transient storage medium that can retain the stored contents even if the power supply is cut off. For example, a hard disk drive, a flash ROM, a USB memory, etc. can be used as the memory 75. For example, the memory 75 stores a control program for controlling the objective measurement unit and the subjective measurement unit.

[0118] <Control action> The control operation of the optometry apparatus 1 will be described.

[0119] 8 is an example of a flowchart showing the control operation of the optometry apparatus 1. For example, in this embodiment, an assistant A who is inexperienced in optometry performs optometry on an eye E to be examined using the optometry apparatus 1 according to this flowchart.

[0120] <Alignment of the measurement unit to the subject's eye (S1)> Assistant A instructs the subject to place his / her chin on the chin rest 5 and observe the presentation window 3. Assistant A also operates the switch unit 6b to select a fixation target for fixating the subject's eye E. The control unit 70 causes the display 31 to display the fixation target in response to an input signal from the switch unit 6b. A target light beam from the display 31 is projected onto the subject's eye E, so that the fixation target is presented in front of the eye.

[0121] Next, assistant A operates switch unit 6b to select a switch for starting alignment between subject's eye E and measurement unit 7. In response to an input signal from switch unit 6b, control unit 70 projects alignment target images by first target projecting optical system 45 and second target projecting optical system 46 onto the cornea of ​​subject's eye E. Furthermore, control unit 70 uses the alignment target images to detect deviations in the X, Y, and Z directions of measurement unit 7 relative to subject's eye E, and moves measurement unit 7 based on these deviations. This completes the alignment.

[0122] <Acquisition of objective values ​​(S2)> When the alignment of the measurement unit 7 with respect to the subject's eye E is completed, the assistant A starts the objective measurement of the subject's eye E. For example, the objective measurement is performed on the left eye EL and the right eye ER in order, and the objective value of the left eye EL and the objective value of the right eye ER are obtained, respectively. Note that the objective measurement may be performed on the left eye EL and the right eye ER simultaneously, and the objective value of the left eye EL and the objective value of the right eye ER may be obtained simultaneously.

[0123] The assistant A operates the switch unit 6b to select a predetermined fixation target (for example, a landscape target). The control unit 70 displays the fixation target on the display 31 in response to an input signal from the switch unit 6b. First, the assistant A performs a preliminary measurement of the objective value of the eye E. The control unit 70 moves the display 31 in the direction of the optical axis L2 in response to the result of the preliminary measurement, and fogging the eye E. That is, the control unit 70 moves the display 31 once to a position where the eye E is in focus, and then moves the display 31 to a position where an appropriate amount of fogging is achieved, and fogging the eye E. Next, the assistant A performs a main measurement of the objective value of the eye E. The control unit 70 irradiates a measurement light beam from the light source 11 toward the fundus of the eye E, and causes the image sensor 22 to capture the fundus reflection light beam reflected by the fundus as a ring image. The control unit 70 calculates the objective optical characteristics of the eye E based on the ring image. In this way, the objective value of the subject's eye E is obtained.

[0124] <Acquisition of self-awareness (S3)> When the objective value of the subject's eye E is obtained, the assistant A starts subjective measurement of the subject's eye E. For example, subjective measurement is performed on the left eye EL and the right eye ER in order, and the subjective value of the left eye EL and the subjective value of the right eye ER are obtained, respectively. Note that subjective measurement may be performed on the left eye EL and the right eye ER simultaneously, and the subjective value of the left eye EL and the subjective value of the right eye ER may be obtained simultaneously.

[0125] The assistant A operates the switch unit 6b to select a predetermined test optotype (e.g., a Landolt ring optotype). The control unit 70 displays the test optotype on the display 31 in response to an input signal from the switch unit 6b. Next, the assistant A operates the switch unit 6b to set a desired correction power. For example, the assistant A may set a desired correction power based on an objective value of the subject's eye E. The control unit 70 controls at least one of the light projecting optical system 30 and the correction optical system 60 in response to an input signal from the switch unit 6b. For example, the control unit 70 may drive the drive mechanism 39 to move the display 31 in the direction of the optical axis L2, thereby correcting the spherical power of the subject's eye E. Furthermore, for example, the control unit 70 may drive the rotation mechanism 62a and the rotation mechanism 62b to rotate the cylindrical lens 61a and the cylindrical lens 61b around the optical axis L2b, thereby correcting at least one of the cylindrical power and the astigmatism axis angle of the subject's eye E. This causes the ocular refraction of the subject's eye E to be corrected to a predetermined diopter value (for example, 0D, etc.).

[0126] Assistant A operates the switch unit 6b to switch the visual acuity value of the test optotype presented to the eye E, while checking whether the correction power for correcting the eye E is appropriate. If the correction power for correcting the eye E is inappropriate, the eye refraction of the eye E may be corrected with a diopter value different from the predetermined diopter value, and it may be checked again whether the correction power is appropriate. For example, at this time, a data log indicating the visual acuity value of the test optotype switched by assistant A, the correction power switched by assistant A, etc. is sequentially stored (accumulated) in the memory 75 based on an input signal from the switch unit 6b.

[0127] For example, the assistant A determines that the weakest correction power that provides the highest visual acuity of the subject's eye E is the perfect correction value of the subject's eye E. The control unit 70 obtains the perfect correction value as a subjective value of the subject's eye E and stores it in the memory 75.

[0128] <Acquisition of data log (S4)> While the objective measurement and subjective measurement are being performed on the subject's eye E, the control unit 70 sequentially stores data logs related to these measurements in the memory 75. For example, the control unit 70 may sequentially store data logs related to the objective measurement of the subject's eye E in the memory 75. Also, for example, the control unit 70 may sequentially store data logs related to the subjective measurement of the subject's eye E in the memory 75.

[0129] In this embodiment, as data logs related to subjective measurement of the subject's eye E, a data log related to measurement of the spherical power of the subject's eye E and a data log related to measurement of the astigmatism power of the subject's eye E are sequentially stored in the memory 75. For example, the control unit 70 stores in the memory 75 a log capable of identifying the operation of assistant A, the measurement procedure of assistant A, the state of the subject's eye E, the measured perfect correction value of the subject's eye E, and the like in the measurement of the spherical power and astigmatism power of the subject's eye E.

[0130] The data log regarding the measurement of the spherical power of the subject's eye E may include a data log regarding the measurement of the amount of accommodation of the subject's eye E. For example, a log capable of identifying the operation of assistant A, the measurement procedure of assistant A, the state of the subject's eye E, the measured amount of accommodation of the subject's eye E, and the like in the measurement of the amount of accommodation of the subject's eye E may be included.

[0131] <Data log analysis (S5)> The control unit 70 analyzes the data log related to the subjective measurement of the subject's eye E and detects whether or not a predetermined data log is included. In this embodiment, a case is illustrated in which the number of times the assistant A switched the correction power of the subject's eye E and the adjustment amount of the subject's eye E are acquired by analyzing the data log related to the subjective measurement of the subject's eye E and detecting whether or not a predetermined data log is included.

[0132] First, the number of times assistant A changes the correction power of the subject's eye E will be described. For example, in a subjective measurement of the subject's eye E, every time assistant A changes the correction power, a predetermined data log is stored in the memory 75. The control unit 70 extracts such data logs from the data log related to the subjective measurement of the subject's eye E and counts the number of such data logs. For example, the number of times assistant A changes the spherical power, the number of times assistant A changes the cylindrical power, the number of times assistant A changes the astigmatism axis angle, etc. may be counted.

[0133] In the above, the number of times the correction power is switched by the assistant A is obtained by extracting a predetermined data log from the data log related to the subjective measurement of the subject's eye E, but this is not limiting. Of course, if a data log indicating the number of times the correction power is switched by the assistant A is included in the data log related to the subjective measurement of the subject's eye E, the number of times the correction power is switched can be obtained directly based on this data log.

[0134] Next, the amount of accommodation of the subject's eye E will be described. For example, in an objective measurement of the subject's eye E, a predetermined data log representing the objective value of the subject's eye E is stored in the memory 75. Also, for example, in a subjective measurement of the subject's eye E, a predetermined data log representing the perfect correction value of the subject's eye E is stored in the memory 75. The control unit 70 extracts these data logs and obtains the difference between the objective value of the subject's eye E and the perfect correction value of the subject's eye E. Also, the control unit 70 determines the amount of accommodation of the subject's eye E according to the difference between the objective value of the subject's eye E and the perfect correction value of the subject's eye E. For example, the control unit 70 may determine that the larger the difference between the objective value of the subject eye E and the fully corrected value of the subject eye E in the negative direction, the greater the amount of accommodation that has worked in the subject eye E, and that the larger the difference between the objective value of the subject eye E and the fully corrected value of the subject eye E in the positive direction, the greater the amount of loss of accommodation in the subject eye E, etc.

[0135] In the above, the amount of accommodation of the subject's eye E is obtained based on the difference between the objective value of the subject's eye E and the fully corrected value of the subject's eye E, but the present invention is not limited to this. For example, the presence or absence of accommodation of the subject's eye E may be obtained by determining whether the difference between the objective value of the subject's eye E and the fully corrected value of the subject's eye E is 0D or a value different from 0D. That is, if the difference between the objective value of the subject's eye E and the fully corrected value of the subject's eye E is 0D, it may be determined that accommodation has not worked on the subject's eye E. Also, if the difference between the objective value of the subject's eye E and the fully corrected value of the subject's eye E is a negative diopter value, it may be determined that accommodation has worked on the subject's eye E. Also, if the difference between the objective value of the subject's eye E and the fully corrected value of the subject's eye E is a positive diopter value, it may be determined that accommodation of the subject's eye E has been lost.

[0136] <Acquisition of evaluation information (S6)> In this embodiment, the control unit 70 obtains scores (scores K1 and K2 described below) based on the number of times the assistant A switches the correction power and the amount of accommodation of the subject's eye E. In this embodiment, the control unit 70 also obtains an evaluation value for evaluating the reliability of the subjective measurement by the assistant A by subtracting each score from the maximum score of the subjective measurement by the assistant A (score K3 described below).

[0137] 9 is an example of a flowchart showing acquisition of an evaluation value for subjective measurement by assistant A. Acquisition of each score and evaluation value by the control unit 70 will be described in detail.

[0138] <Obtaining a score based on the number of times correction power is changed (S6-1)> First, a score based on the number of times the assistant A switches the correction power of the eye E to be examined is acquired. The control unit 70 acquires a score K1 based on the number of times the correction power is switched using a table in which the number of times the correction power is switched corresponds to a score. For example, such a table may be provided for each number of times the spherical power is switched, the number of times the cylindrical power is switched, and the number of times the astigmatism axis angle is switched. Also, for example, such a table may be set in advance based on experiments, simulations, etc. As an example, in this embodiment, the score K1 may be set so that the more times the correction power is switched, the larger the value of the score K1. This allows the control unit 70 to acquire a score K1 corresponding to the number of times the correction power is switched.

[0139] <Obtaining a score based on the amount of adjustment (S6-2)> Next, a score based on the amount of accommodation of the subject's eye E is obtained. The control unit 70 obtains the score K2 based on the amount of accommodation of the subject's eye E using a table in which scores correspond to the amount of accommodation of the subject's eye E. For example, such a table may be set in advance based on experiments, simulations, or the like. As an example, in this embodiment, the value of the score K2 may be determined in detail according to the amount of accommodation of the subject's eye E. For example, the score K2 may be set so that the larger the amount of accommodation of the subject's eye E, the larger the value of the score K2. This allows the control unit 70 to obtain the score K2 corresponding to the amount of accommodation of the subject's eye E.

[0140] <Calculation of subjective measurement score (S6-3)> Next, the score K3 of the subjective measurement by assistant A is acquired. For example, the score of the subjective measurement by assistant A may be set to a maximum value (e.g., 100, etc.) in advance. The control unit 70 calculates the score K3 of the subjective measurement by assistant A by subtracting the above-mentioned scores K1 and K2 from the maximum score of the subjective measurements.

[0141] <Acquisition of subjective measurement evaluation information (S6-4)> The control unit 70 acquires an evaluation value obtained by classifying the score K3 of the subjective measurement by the assistant A based on a predetermined criterion. For example, the evaluation value may be expressed as a value from 10 to 1. That is, the evaluation value may be expressed in 10 stages from evaluation value 10 to evaluation value 1. Also, for example, a reference value (reference range) of the score K3 may be set in advance for each stage of the evaluation value. As an example, the score K3 at evaluation value 10 may be set as 100 to 91, the score K3 at evaluation value 9 may be set as 90 to 81, ..., the score K3 at evaluation value 1 may be set as 10 to 0, etc. For example, the control unit 70 can acquire an evaluation value for the subjective measurement by the assistant A by referring to which stage of the evaluation value the score K3 corresponds to.

[0142] The acquisition of the above scores and evaluation information will be described with specific numerical values ​​as examples. For example, when the number of times the correction power has been switched is 5, the control unit 70 refers to the table and acquires the numerical value of the score K1 as -16. Also, for example, when the amount of accommodation of the subject's eye E is -1D, the control unit 70 refers to the table and acquires the numerical value of the score K2 as -2. Next, for example, the control unit 70 subtracts the numerical value of the score K1 -16 and the numerical value of the score K2 -2 from 100, which is the maximum numerical value of the scores of the subjective measurements by the assistant A, and acquires the score K3 of the subjective measurements by the assistant A as 77. Furthermore, for example, the control unit 70 compares the obtained score K3 with a reference value of the score K3 set for each evaluation value, and acquires an evaluation value of 8 (score K3 is 80 to 71) as an evaluation value for the subjective measurements by the assistant A.

[0143] In this embodiment, the evaluation value for the subjective measurement by assistant A is obtained based on the score K3 of the subjective measurement by assistant A, but is not limited to this. Of course, the score K3 of the subjective measurement by assistant A may be obtained as the evaluation value for the subjective measurement by assistant A.

[0144] <Output of self-awareness value and evaluation information (S7)> The control unit 70 causes the monitor 6a to display both the perfect correction value of the subject's eye E and the acquired evaluation value.

[0145] 7 is an example of a display screen of the monitor 6a. The monitor 6a displays a perfect correction value 110 of the subject's eye E, an evaluation value 101, factors 102 that contributed to the evaluation value 101 (in this embodiment, the number of times the assistant A changed the correction power, the degree of adjustment of the subject's eye E, etc.), a score K3, details 103 of the score K3, etc. In addition, the monitor 6a may display at least one of the evaluation value 101 and the factors 102 together with the perfect correction value 110 of the subject's eye E.

[0146] For example, the monitor 6a may display all of the factors 102 that contributed to the evaluation value 101. Also, for example, the monitor 6a may display some of the factors 102 that contributed to the evaluation value 101. As an example, the monitor 6a may display only the factors 102 that contributed greatly to the evaluation value 101. In this case, for example, the control unit 70 may set a predetermined threshold value for the score details 103 for each factor and display factors that exceed the threshold value.

[0147] For example, by checking the perfect correction value of the subject's eye E in the subjective test performed by assistant A and the evaluation value 101 for evaluating the reliability of the subjective test, examiner D can judge the appropriateness of the subjective test performed by assistant A, and can easily make decisions such as conducting a re-examination of subject's eye E and prescribing an appropriate prescription for subject's eye E.

[0148] As described above, for example, the information analysis device in this embodiment acquires the subjective values ​​of the subject's eye measured by the subjective test, acquires a data log related to the subjective test when the subjective values ​​of the subject's eye are measured by the subjective test, acquires evaluation information for evaluating the reliability of the subjective test based on the data log, and outputs the subjective values ​​and the evaluation information. This allows the examiner to easily check whether the subjective test performed by an inexperienced operator (assistant A) is appropriate, making it easier to determine whether to perform a re-examination of the subject's eye, an appropriate prescription for the subject's eye, etc.

[0149] In addition, for example, the information analysis device in this embodiment acquires at least one of a data log related to a spherical test for acquiring spherical information of the subject's eye and a data log related to an astigmatism test for acquiring astigmatism information of the subject's eye as a data log related to a subjective test of the subject's eye. This allows the examiner to obtain evaluation information reflecting whether the spherical information and astigmatism information of the subject's eye have been appropriately examined, and to easily determine whether to reexamine or prescribe a prescription for the subject's eye. In addition, for example, the information analysis device in this embodiment acquires a data log related to at least an accommodation test for acquiring accommodation information of the subject eye as a data log related to a spherical test of the subject eye, thereby allowing the examiner to obtain evaluation information reflecting the accommodation information of the subject eye, and to perform an appropriate test and prescription for the subject eye.

[0150] Also, for example, the information analysis device in this embodiment includes a subjective measuring means for subjectively measuring the optical characteristics of the eye to be examined by projecting a visual target light beam toward the eye to be examined and changing the optical characteristics of the visual target light beam, and obtains a subjective value measured by the subjective measuring means and obtains a data log when the subjective value is measured by the subjective measuring means. This allows subjective testing of the eye to be performed, analysis of the data log, and output of the subjective value and evaluation information to be performed within a single device.

[0151] <Example of transformation> In this embodiment, the configuration is described as an example in which the accommodation state (e.g., the amount of accommodation) in the subjective measurement of the subject's eye E is determined from the difference between the objective value of the subject's eye E and the fully corrected value of the subject's eye E based on the data log related to the objective measurement and subjective measurement of the subject's eye E, and the score K2 is acquired, but the present invention is not limited to this. For example, during the subjective measurement of the subject's eye E, the objective measurement of the subject's eye E may be performed, and the accommodation state during the subjective measurement of the subject's eye E may be determined based on the change over time in the objective value of the subject's eye E. In this case, the control unit 70 captures and analyzes the ring image reflected on the fundus of the subject's eye E at the same time as the subjective measurement of the subject's eye E, and stores the change in the objective value of the subject's eye E as a data log in the memory 75.

[0152] For example, the control unit 70 may analyze such a data log and detect whether the objective value of the test eye E gradually changes to a negative value or whether the objective value of the test eye E gradually changes to a positive value. Of course, for example, the control unit 70 may analyze such a data log and detect the rate of change of the objective value of the test eye E gradually changing to a negative value or a positive value. In this case, the control unit 70 may determine the accommodation state of the test eye E in the subjective measurement from the change or rate of change of the objective value of the test eye E. For example, the control unit 70 may determine that the greater the change in the objective value of the test eye E in the negative direction, the greater the amount of accommodation that has worked in the test eye E, and the greater the change in the objective value of the test eye E in the positive direction, the greater the amount of accommodation that has been lost in the test eye E, etc.

[0153] Furthermore, for example, the control unit 70 may analyze such a data log and detect whether the change in the objective value of the test eye E has converged (i.e., whether the change in the objective value of the test eye E has gradually become smaller). In this case, the control unit 70 may determine the accommodation state of the test eye E in the subjective measurement from the degree of convergence of the objective value of the test eye E. For example, the control unit 70 may determine that if the change in the objective value of the test eye E has converged, it is a subjective value obtained when the accommodation of the test eye E has become constant, and if the change in the objective value of the test eye E has not converged, it is a subjective value obtained while the test eye E is accommodating, etc.

[0154] For example, the control unit 70 can obtain the score K2 by using a table in which scores are associated with such accommodation states for the subject's eye E. In addition, for example, the control unit 70 may obtain a score K3 of the subjective measurement by assistant A by subtracting the score K2 from the maximum score in the subjective measurement, and obtain an evaluation value 101 for the subjective measurement by assistant A by referring to which stage of the evaluation value the score K3 corresponds to.

[0155] In this embodiment, the data log related to the measurement of the astigmatism power of the subject's eye E may include a data log related to the measurement of the residual astigmatism of the subject's eye E. For example, the data log may include a log that can identify the operation of assistant A, the measurement procedure of assistant A, the condition of the subject's eye E, the measured residual astigmatism of the subject's eye E, and the like in the measurement of the residual astigmatism of the subject's eye E.

[0156] In this case, the control unit 70 may analyze a data log related to the measurement of the residual astigmatism of the subject's eye E, and obtain a score for at least one of the degree of residual astigmatism, the number of times the residual astigmatism has been corrected, the degree of convergence of the residual astigmatism, etc., in the subjective measurement of the subject's eye E. For example, a table correlating scores with the degree of residual astigmatism of the subject's eye E, a table correlating scores with the number of times the residual astigmatism of the subject's eye E has been corrected, a table correlating scores with the degree of convergence of the residual astigmatism of the subject's eye E, etc. are set in advance, and each score can be obtained by using these tables.

[0157] Furthermore, the control unit 70 subtracts each of the obtained scores from the maximum score of the subjective measurements by assistant A, and refers to which stage of the evaluation value the score K3 of the subjective measurement by assistant A corresponds to, thereby obtaining an evaluation value 101 for the subjective measurement by assistant A. This allows the examiner D to obtain evaluation information reflecting the residual astigmatism information of the subject's eye E, and allows the examiner D to perform an appropriate examination and prescription for the subject's eye.

[0158] In this embodiment, a data log stored every time the visual acuity value corresponding to the visual target visually recognized by the subject's eye E changes may be extracted from the data log related to the subject's eye E, and a score based on the extracted data may be obtained. For example, in this case, the control unit 70 may obtain a predetermined score according to the visual acuity value of the subject's eye E when the fully corrected value of the subject's eye E is measured. As an example, the higher the visual acuity value of the subject's eye E (the better the visual acuity of the subject's eye E), the smaller the score value to be subtracted from the maximum score in the subjective measurement may be set, and the lower the visual acuity value of the subject's eye E (the worse the visual acuity of the subject's eye E), the larger the score value to be subtracted from the maximum score in the subjective measurement may be set. The control unit 70 may obtain an evaluation value 101 for the subjective measurement by the assistant A by subtracting the obtained predetermined score from the maximum score of the subjective measurement by the assistant A, and referring to which stage of the evaluation value the score K3 of the subjective measurement by the assistant A corresponds to.

[0159] In this embodiment, a data log indicating the optical characteristics of the subject's eye E (for example, at least one of spherical power, cylindrical power, and astigmatism axis angle) may be extracted from the data log regarding the subjective measurement of the subject's eye E, and a score may be obtained based on the extracted data log. For example, in this case, when the optical characteristics of the subject's eye E are large, a predetermined score may be subtracted from the maximum score in the subjective measurement. As an example, if the spherical power of the subject's eye E is a value exceeding the range of -6D to +6D, the maximum score in the subjective measurement may be subtracted. Also, as an example, if the cylindrical power of the subject's eye E is a value exceeding the range of -2D to +2D, the maximum score in the subjective measurement may be subtracted.

[0160] In this embodiment, a data log showing the state of the subject's eye E (changes during the test) may be extracted from the data log related to the subjective measurement of the subject's eye E, and a score may be obtained based on the data log. For example, the state of the subject's eye E may be at least one of the number of times (frequency) the subject's eye E squints, the number of times (frequency) the subject's eye E blinks, the pupil size of the subject's eye E, whether the subject's eye E has ptosis, and the like.

[0161] In this case, in the subjective measurement of the subject's eye E, an anterior ocular observation image of the subject's eye E is obtained using the observation optical system 50 or the imaging unit 90, and the state of the subject's eye E determined by analyzing the pupil shape in the anterior ocular observation image may be stored in the memory 75 as a data log in sequence. The control unit 70 obtains a predetermined score for each state of the subject's eye E based on the data log indicating the state of the subject's eye E. As an example, a score corresponding to the number of times the subject narrows his / her eye E during subjective measurement can be obtained using a table in which a score is associated with the number of times the subject narrows his / her eye during subjective measurement. The control unit 70 may obtain an evaluation value 101 for the subjective measurement by the assistant A by subtracting the obtained score from the maximum score of the subjective measurement by the assistant A and referring to which stage of the evaluation value the score K3 of the subjective measurement by the assistant A corresponds to.

[0162] In the present embodiment, the score K1 based on the number of times the assistant A switches the correction power and the score K2 based on the degree of accommodation of the eye E in the subjective measurement of the eye E are obtained, but the present invention is not limited to this. For example, the score K1 based on the number of times the assistant A switches the correction power or the score K2 based on the degree of accommodation of the eye E may be obtained. In addition, for example, a score based on at least one of the residual astigmatism of the eye E, the visual acuity of the eye E, the condition of the eye E, etc., as described above may be obtained. In addition, for example, a score based on the objective value of the eye E (for example, at least one of the spherical power, cylindrical power, astigmatism axis angle, high-order aberration, etc., obtained objectively) may be obtained. Of course, a score obtained by combining these may be obtained. The control unit 70 may obtain an overall evaluation value 101 for the subjective measurements by assistant A by subtracting each of the obtained scores from the maximum score of the subjective measurements by assistant A.

[0163] In this embodiment, the score K1 based on the number of times the correction power is switched, the score K2 based on the degree of accommodation, and other scores are subtracted from the maximum score of the subjective measurement by the assistant A, but the present invention is not limited to this. For example, in this embodiment, the average value of each score may be calculated. In this case, for example, a reference value (reference range) of the average score may be set in advance for each stage of the evaluation value, and the evaluation value 101 for the subjective measurement by the assistant A may be obtained by referring to which stage of the evaluation value the average score corresponds to.

[0164] In this embodiment, the evaluation value 101 of the subjective test by the assistant A is obtained based on the data log related to the subjective measurement of the subject's eye E, and the evaluation value 101 is output. However, the present invention is not limited to this. For example, information for encouraging the examiner D to retest the subjective measurement of the subject's eye E may be output based on the data log related to the subjective measurement of the subject's eye E. As an example, items for which a certain data log is detected from the data log related to the subjective measurement of the subject's eye E may be displayed as a list of retest items. As another example, items for which the score exceeds a certain threshold value for each item of the subjective measurement of the subject's eye E may be displayed on the monitor 6a as a list of retest items. At this time, the evaluation value 101, factors 102 that contributed to the evaluation value 101, score K3, details 103 of score K3, etc. may be displayed together. This allows the examiner D to easily decide which items to retest for the subjective measurement of the subject's eye E, etc.

[0165] Also, for example, information for proposing a prescription value for the subject's eye E may be output to the examiner D based on a data log related to the subjective measurement of the subject's eye E. Of course, information for proposing a prescription value may be output based on a data log showing the results of a medical interview conducted with the examinee together with the data log related to the subjective measurement of the subject's eye E. As an example, a proposed prescription value may be obtained using a mathematical model trained by a machine learning algorithm and output to the monitor 6a. This allows the examiner D to easily determine a prescription value for the subject's eye E.

[0166] In addition, the prescription value actually prescribed by the examiner D may be fed back to the control unit 70 in response to the prescription value proposed by the control unit 70. For example, the control unit 70 may create a new mathematical model by updating the learned mathematical model by reflecting newly acquired input data and output data (here, the proposed prescription value and the actually prescribed prescription value) in the mathematical model trained by the machine learning algorithm. This may optimize the prescription value proposed by the control unit 70. [Explanation of symbols]

[0167] 1. Subjective eye examination device 7 Measuring part 10 Objective Measuring Optical System 25 Subjective Measuring Optical System 70 Control section 75 Memory 81 Deflection Mirror 84 Reflective Mirror 85 Concave Mirror

Claims

1. An information analysis device that analyzes information related to a subjective test in which an optical characteristic of a subject's eye is subjectively measured using a target presenting means that emits a target light beam toward the subject's eye and a correction means that changes an optical characteristic of the target light beam, a subjective value acquiring means for acquiring a subjective value of the subject's eye measured in the subjective examination; a data log acquiring means for acquiring a data log relating to the subjective test when the subjective value of the subject's eye is measured in the subjective test; an evaluation information acquisition means for acquiring evaluation information for evaluating the reliability of the subjective test based on the data log; an output means for outputting the subjective value and the evaluation information; Equipped with The information analysis device is characterized in that the data log acquisition means acquires at least one of an operation data log regarding the operation of the optotype presenting means by an operator or a control means, and an operation data log regarding the operation of the correction means by an operator or a control means, as a data log regarding the subjective test.

2. 2. The information analysis device according to claim 1, The data log acquisition means acquires, as a data log related to the subjective examination, at least one of a data log related to a spherical examination for acquiring spherical information of the subject's eye and a data log related to an astigmatism examination for acquiring astigmatism information of the subject's eye; The information analyzing device, wherein the evaluation information acquiring means acquires the evaluation information based on at least one of a data log relating to the spherical test and a data log relating to the astigmatism test.

3. 3. The information analysis device according to claim 2, The data log acquisition means acquires, as a data log related to the spherical test, at least a data log related to an accommodation test for acquiring accommodation information of the subject's eye; The information analyzing device, wherein the evaluation information acquiring means acquires the evaluation information based on at least a data log relating to the adjustment test.

4. In the information analysis device according to claim 2 or 3, the data log acquisition means acquires, as a data log related to the astigmatism test, at least a data log related to a residual astigmatism test for acquiring residual astigmatism information of the subject's eye; The information analyzing device, wherein the evaluation information acquiring means acquires the evaluation information based on a data log relating to at least the residual astigmatism test.

5. In any one of claims 1 to 4, the information analysis device further comprises: a subjective measuring means having the optotype presenting means and the correction means, The subjective value acquisition means acquires the subjective value measured by the subjective measurement means, The subjective optometry apparatus, wherein the data log acquisition means acquires the data log when the subjective value is measured by the subjective measurement means.

6. An information analysis program for use in an information analysis device that analyzes information relating to a subjective test in which an optical characteristic of a subject's eye is subjectively measured using a target presenting means that emits a target light beam toward the subject's eye and a correction means that changes an optical characteristic of the target light beam, the information analysis program comprising: When executed by a processor of the information analysis device, a subjective value acquiring step of acquiring a subjective value of the subject's eye measured by the subjective examination; a data log acquiring step of acquiring a data log related to the subjective test when the subjective value of the subject's eye is measured in the subjective test; acquiring evaluation information used to confirm the reliability of the subjective test based on the data log; an output step of outputting the subjective value and the evaluation information; causing the information analysis device to execute The data log acquisition step acquires, as a data log related to the subjective test, at least one of an operation data log related to the operation of the optotype presenting means by an operator or a control means and an operation data log related to the operation of the correction means by an operator or a control means.

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